key lime meltaways

INGREDIENTS

• 12 tablespoons (1 1/2 sticks) unsalted butter, room temperature
• 1 cup confectioners’ sugar
• Grated zest of 4 tiny or 2 large key limes
• 2 tablespoons freshly squeezed lime juice
• 1 tablespoon pure vanilla extract
• 1 3/4 cup plus 2 Tablespoons all-purpose flour (a.k.a. 2 cups minus 2 tablespoons)
• 2 tablespoons cornstarch
• 1/4 teaspoon salt